Ihe nkpuchi ihe nkpuchi nwere ike imebi, ịrụ ọrụ nke ọma na iku ume-Choi-2021-Sayensị dị elu

Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Ihe di elu na injinia kemịkalụ, Mahadum Sayensị na Nkà na ụzụ (UST), Daejeon, 34113 Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Ihe di elu na injinia kemịkalụ, Mahadum Sayensị na Nkà na ụzụ (UST), Daejeon, 34113 Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Ihe di elu na injinia kemịkalụ, Mahadum Sayensị na Nkà na ụzụ (UST), Daejeon, 34113 Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Ihe di elu na injinia kemịkalụ, Mahadum Sayensị na Nkà na ụzụ (UST), Daejeon, 34113 Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Ihe di elu na injinia kemịkalụ, Mahadum Sayensị na Nkà na ụzụ (UST), Daejeon, 34113 Republic of Korea
Korea Institute of Chemical Technology (KRICT) Biobased Chemistry Research Center, Ulsan, 44429, Republic of Korea
Ihe di elu na injinia kemịkalụ, Mahadum Sayensị na Nkà na ụzụ (UST), Daejeon, 34113 Republic of Korea
Jiri njikọ dị n'okpuru ka gị na ndị enyi gị na ndị ọrụ ibe gị kerịta ụdị ederede a n'uju. mụtakwuo.
N'ihi ọrịa ọrịa coronavirus na okwu metụtara particulate (PM) na ikuku, ọchịchọ maka masks etoola nke ukwuu. Agbanyeghị, ihe nzacha nkpuchi ọdịnala dabere na ọkụ eletrik static na nano sieve bụ ihe a ga-atụfu ya, enweghị ike imebi ma ọ bụ megharịa ya, nke ga-ebute nnukwu nsogbu mkpofu. Tụkwasị na nke ahụ, nke mbụ ga-efunahụ ọrụ ya n'okpuru ọnọdụ iru mmiri, ebe nke ikpeazụ ga-arụ ọrụ na nkwụsị ikuku dị ịrịba ama na nkwụsị ngwa ngwa pore ga-eme. N'ebe a, ihe nzacha nkpuchi fiber na-arụ ọrụ dị elu nke nwere ike imebi ihe, nke na-egbochi mmiri, na-eku ume nke ukwuu. Na nkenke, a na-ejikọta fibers ultrafine abụọ na nanofiber mats n'ime nzacha akpụkpọ ahụ Janus, wee kpuchie ya na chitosan nanowhiskers cationically gbadoro anya. Nzacha a na-arụ ọrụ nke ọma dị ka nzacha N95 azụmahịa ma nwee ike wepu 98.3% nke 2.5µm PM. Nanofibers na-enyocha ụmụ irighiri ihe dị mma, yana eriri ultrafine na-enye ọdịiche nrụgide dị ala nke 59 Pa, nke dabara maka iku ume mmadụ. N'adịghị ka mbelata dị nkọ na arụmọrụ nke nzacha N95 azụmahịa mgbe ekpughere ya na mmiri, mfu arụmọrụ nke nzacha a bụ nke a na-apụghị ịgbagha agbagha, yabụ enwere ike iji ya ọtụtụ oge n'ihi na dipole na-adịgide adịgide nke chitosan adsorbs ultrafine PM (dịka ọmụmaatụ, nitrogen). Na sọlfọ oxides). Ọ dị mkpa na nzacha a ga-emebi kpamkpam n'ime ala compote n'ime izu anọ.
Ọrịa ọrịa coronavirus na-enwetụbeghị ụdị ya ugbu a (COVID-19) na-ebuli nnukwu ọchịchọ maka ihe mkpuchi. [1] Healthtù Ahụ Ike (wa (WHO) na-eme atụmatụ na a na-achọ ihe mkpuchi ahụike nde 89 kwa ọnwa n'afọ a. [1] Ọ bụghị naanị na ndị ọkachamara ahụike chọrọ ihe mkpuchi N95 dị elu, mana mkpuchi ebumnuche maka mmadụ niile aghọwo ihe dị mkpa kwa ụbọchị maka igbochi ọrịa na-efe efe nke iku ume. [1] Na mgbakwunye, ministri dị mkpa na-akwadosi ike ka a na-eji ihe mkpuchi nwere ike ịpụpụ kwa ụbọchị, [1] nke a ebutela nsogbu gburugburu ebe obibi metụtara nnukwu mkpofu nkpuchi.
Ebe ọ bụ na particulate matter (PM) bụ nsogbu mmetọ ikuku na-enwe nsogbu ugbu a, ihe mkpuchi abụrụla ihe mgbochi kachasị dị irè maka ndị mmadụ n'otu n'otu. A na-ekewa PM n'ime PM2.5 na PM10 dịka nha nha (2.5 na 10μm n'otu n'otu), nke na-emetụta gburugburu ebe obibi [2] na ọdịdị ndụ mmadụ n'ụzọ dị iche iche. [2] Kwa afọ, PM na-akpata ọnwụ nde 4.2 yana nkwarụ nde 103.1 gbanwere afọ ndụ. [2] PM2.5 na-ebute ahụike dị oke egwu ma bụrụkwa nke akpọrọ aha ya dịka otu I carcinogen. [2] Ya mere, ọ bụ oge na ihe dị mkpa iji nyochaa na ịmepụta ihe nkpuchi nkpuchi na-arụ ọrụ nke ọma n'ihe gbasara ikuku ikuku na mwepụ PM. [3]
N'ikwu okwu n'ozuzu, ihe nzacha eriri ọdịnala na-ejide PM n'ụzọ abụọ dị iche iche: site na sieving anụ ahụ dabere na nanofibers na mgbasa ozi electrostatic dabere na microfibers (Figure 1a). Ojiji nke ihe nzacha nke nanofiber, karịsịa electrospun nanofiber mats, egosila na ọ bụ atụmatụ dị irè iji wepụ PM, bụ nke sitere na nnweta ihe dị ukwuu na nhazi ngwaahịa na-achịkwa. [3] Ute nanofiber nwere ike wepụ ihe dị iche iche nke ebumnuche ebumnuche, nke kpatara oke ọdịiche dị n'etiti irighiri ihe na pores. [3] Otú ọ dị, ekwesịrị ikpokọta eriri nano-nano ka ọ bụrụ obere pores, nke na-emerụ ahụ ike iku ume mmadụ n'ihi oke nrụgide dị elu jikọtara ya. Na mgbakwunye, a ga-egbochi obere oghere ndị ahụ ngwa ngwa.
N'aka nke ọzọ, ihe na-agbaze nke ultra-fine fiber mat bụ nke ọkụ eletrik dị elu na-ana ya n'ụzọ eletriki, na-ejidekwa ihe ndị dị ntakịrị site na mgbasa ozi electrostatic. [4] Dị ka ihe atụ nnochite anya, N95 respirator bụ ihe nzacha ihu-nkpuchi na-egbo mkpa nke National Institute of Occupational Safety and Health n'ihi na ọ nwere ike nyochaa ma ọ dịkarịa ala 95% nke ikuku. Ụdị nzacha a na-amịkọrọ ultrafine PM, nke na-emekarị ihe ndị anionic dị ka SO42- na NO3-, site na mma electrostatic siri ike. Agbanyeghị, ụgwọ kwụ ọtọ n'elu akwa eriri eriri na-adị mfe ịgbasa na gburugburu iru mmiri, dịka nke a na-ahụ na iku ume mmadụ, [4] na-ebute mbelata ikike mgbasa ozi.
Iji meziwanye arụmọrụ filtration ma ọ bụ dozie ahia n'etiti nrụpụta nrụpụta na nkwụsị nrụgide, ihe nzacha dabere na nanofibers na microfibers na-ejikọta ya na ihe dị elu-k, dị ka carbon carbon, metal organic frameworks, na PTFE nanoparticles. [4] Otú ọ dị, nsi ihe ndị dị ndụ na-ejighị n'aka na mkpochapụ nke ihe mgbakwunye ndị a ka bụ nsogbu a na-apụghị izere ezere. [4] Karịsịa, ụdị ihe nzacha ọdịnala abụọ a na-abụkarị ndị anaghị emebi emebi, yabụ a ga-emecha lie ha n'ebe a na-ekpofu ahịhịa ma ọ bụ gbaa ọkụ mgbe ejiri ya. Ya mere, mmepe nke ihe nzacha nkpuchi ka mma iji dozie nsogbu ndị a na-ekpofu ihe ma n'otu oge ahụ jide PM n'ụzọ na-eju afọ ma dị ike bụ mkpa dị ugbu a.
Iji dozie nsogbu ndị a dị n'elu, anyị arụpụtala ihe nzacha akpụkpọ anụ Janus jikọtara ya na poly(butylene succinate) dabeere (PBS-based) [5] microfiber na nanofiber mats. A na-ekpuchi ihe nzacha akpụkpọ ahụ Janus na chitosan nano whiskers (CsWs) [5] (Figure 1b). Dị ka anyị niile maara, PBS bụ ihe nnọchiteanya nke biodegradable polymer, nke nwere ike ịmepụta ultrafine fiber na nanofiber nonwovens site na electrospinning. Fiber nano-scale na-ejide PM n'ụzọ anụ ahụ, ebe micro-scale nano-fibers na-ebelata nrụgide nrụgide ma mee ka usoro CsW. Chitosan bụ ihe dabere na bio nke egosipụtara na ọ nwere ezigbo ihe ndị dị ndụ, gụnyere biocompatibility, biodegradability na obere nsi, [5] nke nwere ike ibelata nchekasị metụtara iku ume na mberede nke ndị ọrụ. [5] Na mgbakwunye, chitosan nwere saịtị cationic na otu amide polar. [5] Ọbụlagodi n'okpuru ọnọdụ iru mmiri, ọ nwere ike ịdọta ụmụ irighiri ihe ultrafine polar (dị ka SO42- na NO3-).
N'ebe a, anyị na-akọ ihe nzacha nwere ike ịdị ndụ, ịrụ ọrụ dị elu, ihe na-egosi mmiri yana nkpuchi nkpuchi dị ala dabere na ihe ndị nwere ike ime ngwa ngwa. N'ihi nchikota nke sieving anụ ahụ na mgbasa ozi electrostatic, ihe nzacha microfiber / nanofiber agbakwunyere CsW nwere nrụpụta PM2.5 dị elu (ruo 98%), na n'otu oge ahụ, oke nrụgide na-adaba na nzacha kachasị njọ bụ. naanị Ọ bụ 59 Pa, dabara maka iku ume mmadụ. N'ịtụnyere nrụrụ aka dị mkpa nke nzacha azụmahịa N95 gosipụtara, nzacha a na-egosipụta mfu nke nrụpụta PM na-enweghị atụ (<1%) ọbụlagodi mgbe mmiri zuru oke, n'ihi ụgwọ CsW na-adịgide adịgide. Na mgbakwunye, ihe nzacha anyị ga-adị ndụ kpamkpam n'ime ala compoted n'ime izu anọ. E jiri ya tụnyere ọmụmụ ndị ọzọ nwere echiche ndị yiri ya, nke akụkụ nzacha mejupụtara ihe ndị nwere ike imebi ihe, ma ọ bụ na-egosi oke arụmọrụ na ngwa ndị na-abụghị nke biopolymer, [6] nzacha a na-egosi kpọmkwem Biodegradability nke njirimara dị elu (ihe nkiri S1, ozi na-akwado).
Dị ka akụkụ nke nzacha akpụkpọ ahụ Janus, nanofiber na superfine fiber PBS mats ka ebu ụzọ kwadebe ya. Ya mere, 11% na 12% PBS ngwọta bụ electrospun iji mepụta nanometer na micrometer fibers, n'otu n'otu, n'ihi ọdịiche ha na viscosity. [7] A na-edepụta ozi zuru ezu nke njirimara ngwọta na ọnọdụ electrospinning kacha mma na Tebụl S1 na S2, na ozi nkwado. Ebe ọ bụ na eriri as-spun ka nwere ihe mgbaze fọdụrụnụ, a na-agbakwunye bat ịsa ahụ coagulation mmiri na ngwaọrụ eletrọnịkị, dị ka egosiri na eserese 2a. Tụkwasị na nke ahụ, mmiri ịsa mmiri ahụ nwekwara ike iji etiti ahụ na-anakọta ihe dị ọcha PBS fiber mat, nke dị iche na matrix siri ike na ntọala omenala (Figure 2b). [7] Nkezi eriri eriri microfiber na nanofiber mats bụ 2.25 na 0.51 µm, n'otu n'otu, na nkezi pore dayameta bụ 13.1 na 3.5 µm, n'otu n'otu (Figure 2c, d). Dị ka 9: 1 chloroform / ethanol ihe mgbaze na-ekpochapụ ngwa ngwa mgbe a tọhapụrụ ya na nozzle, ọdịiche viscosity dị n'etiti 11 na 12 wt% ngwọta na-abawanye ngwa ngwa (Ọnọdụ S1, ozi na-akwado). [7] Ya mere, ọdịiche dị iche iche nke naanị 1 wt% nwere ike ime ka mgbanwe dị ukwuu na dayameta eriri.
Tupu ịlele arụmọrụ nzacha (Ọnụ ọgụgụ S2, ozi na-akwado), iji tụnyere nzacha dị iche iche n'ụzọ ezi uche dị na ya, a na-emepụta electrospun nonwovens nke ọkpụrụkpụ ọkọlọtọ, n'ihi na ọkpụrụkpụ bụ ihe dị mkpa na-emetụta ọdịiche nrụgide na nzacha arụmọrụ nke nzacha. Ebe ọ bụ na ihe ndị na-abụghị nke a na-eji eme ihe dị nro na nke porous, ọ na-esiri ike ịchọpụta kpọmkwem ọkpụrụkpụ electrospun nonwovens. Ọkpụrụkpụ nke ákwà na-adịkarị nhata na njupụta elu (arọ kwa otu mpaghara, nha ntọala). Ya mere, n'ime ọmụmụ ihe a, anyị na-eji ndabere arọ (gm-2) dị ka ihe dị irè nha nke ọkpụrụkpụ. [8] A na-achịkwa ọkpụrụkpụ site n'ịgbanwe oge electrospinning, dị ka egosiri na foto 2e. Ka oge ntụgharị na-abawanye site na nkeji 1 ruo nkeji iri, ọkpụrụkpụ microfiber ute na-abawanye ruo 0.2, 2.0, 5.2, na 9.1 gm-2, n'otu n'otu. N'otu ụzọ ahụ, a na-amụba ọkpụrụkpụ nke nanofiber mate na 0.2, 1.0, 2.5, na 4.8 gm-2, n'otu n'otu. Microfiber na nanofiber mats na-họpụtara site ha ọkpụrụkpụ ụkpụrụ (gm-2) dị ka: M0.2, M2.0, M5.2 na M9.1, na N0.2, N1.0, N2.5 na N4. 8.
Ọdịiche ikuku ikuku (ΔP) nke ihe nlele niile bụ ihe dị mkpa na-egosi arụmọrụ nzacha. [9] Iku ume site na nzacha nwere oke nrụgide adịghị ahụ onye ọrụ ahụ iru ala. Dị ka o kwesịrị ịdị, a na-ahụta na nrụgide nrụgide na-abawanye ka ọkpụkpụ nke nzacha na-abawanye, dị ka egosiri na Figure S3, na-akwado ozi. Ngwunye nanofiber (N4.8) na-egosi nkwụsị nrụgide dị elu karịa microfiber (M5.2) na nha nha nha n'ihi na nanofiber mat nwere obere pores. Ka ikuku na-agafe na nzacha na ọsọ dị n'etiti 0.5 na 13.2 ms-1, nkwụsị nrụgide nke ụdị nzacha abụọ dị iche iche na-eji nwayọọ nwayọọ na-abawanye site na 101 Pa ruo 102 Pa. Ekwesịrị ime ka ọkpụkpụ dị mma iji dozie nkwụsị nrụgide na nkwụsị PM. arụmọrụ; Ọsọ ikuku nke 1.0 ms-1 bụ ihe ezi uche dị na ya n'ihi na oge ọ na-ewe mmadụ iji iku ume n'ọnụ bụ ihe dịka 1.3 ms-1. [10] N'akụkụ a, a na-anabata nrụgide nrụgide nke M5.2 na N4.8 na ikuku ikuku nke 1.0 ms-1 (ihe na-erughị 50 Pa) (Nyocha S4, ozi na-akwado). Biko mara na mbelata nrụgide nke N95 na ihe mkpuchi nzacha Korea (KF94) yiri 50 ruo 70 Pa, n'otu n'otu. Nhazi CsW ọzọ na ntinye nzacha micro / nano nwere ike ịbawanye nguzogide ikuku; ya mere, iji nye oke nkwụsị nrụgide, anyị nyochaa N2.5 na M2.0 tupu nyochaa M5.2 na N4.8.
N'ebe a na-achọsi ike ikuku nke 1.0 ms-1, mwepu nrụpụta nke PM1.0, PM2.5, na PM10 nke PBS microfiber na nanofiber mats ka a mụrụ n'enweghị ụgwọ ọ bụla (Nyocha S5, ozi na-akwado). A na-ahụta na arụmọrụ mwepụ PM ​​na-abawanye na mmụba nke ọkpụrụkpụ na nha PM. Mwepụ nrụpụta nke N2.5 dị mma karịa M2.0 n'ihi obere pores ya. Mwepụ arụmọrụ nke M2.0 maka PM1.0, PM2.5 na PM10 bụ 55.5%, 64.6% na 78.8%, n'otu n'otu, mgbe ụkpụrụ ndị yiri ya nke N2.5 bụ 71.9%, 80.1% na 89.6% (Figure). 2f). Anyị chọpụtara na nnukwu ihe dị iche na arụmọrụ n'etiti M2.0 na N2.5 bụ PM1.0, nke na-egosi na sieving anụ ahụ nke microfiber ntupu dị irè maka micron-larịị PM, ma ọ dịghị irè maka nano-larịị PM (Ọgụgụ). S6, ozi nkwado). , M2.0 na N2.5 ha abụọ na-egosi ike ijide PM dị ala nke na-erughị 90%. Tụkwasị na nke ahụ, N2.5 nwere ike bụrụ ihe dị mfe na uzuzu karịa M2.0, n'ihi na uzuzu uzuzu nwere ike igbochi obere pores nke N2.5. Na enweghị ụgwọ kwụ ọtọ, sieving anụ ahụ nwere oke na ikike ya iji nweta mbelata nrụgide achọrọ na nrụpụta ọrụ n'otu oge n'ihi mmekọrịta azụmaahịa dị n'etiti ha.
Electrostatic adsorption bụ usoro a na-ejikarị ejide PM n'ụzọ dị mma. [11] N'ozuzu, a na-amanye ụgwọ static na nzacha anaghị kpara akpa site na mpaghara ọkụ eletrik dị elu; Otú ọ dị, ụgwọ a kwụ ọtọ na-apụ n'ụzọ dị mfe n'okpuru ọnọdụ iru mmiri, na-ebute mfu nke ike ijide PM. [4] Dị ka ihe na-adabere na bio maka nzacha electrostatic, anyị webatara 200 nm ogologo na 40 nm n'obosara CsW; n'ihi otu ammonium ha na otu amide polar, nanowhiskers ndị a nwere ụgwọ cationic na-adịgide adịgide. Ụgwọ dị mma dị n'elu CsW na-anọchi anya ya zeta ikike (ZP); CsW na-agbasasị na mmiri na pH nke 4.8, na ZP ha bụ + 49.8 mV (Ọnọdụ S7, ozi na-akwado).
Ejiri CsW kpuchie PBS microfibers (ChMs) na nanofibers (ChNs) site na mkpuchi ntinye dị mfe na 0.2 wt% CsW mgbasa mmiri, nke bụ ntinye kwesịrị ekwesị iji tinye oke CsW na elu nke PBS fibers, dị ka egosiri na ọnụ ọgụgụ egosiri na eserese 3a na eserese S8, ozi na-akwado. Ihe onyonyo a na-ahụ maka ikuku nitrogen na-ekesa X-ray spectroscopy (EDS) na-egosi na a na-ekpuchi elu nke eriri PBS n'otu n'otu na irighiri CsW, nke pụtakwara ìhè na onyonyo nyocha eletrọnịkị (SEM) (Njirimara 3b; Figure S9, ozi na-akwado) . Tụkwasị na nke a, usoro mkpuchi a na-enyere ndị nanomaterials ebubo aka ka ha kechie eriri elu nke ọma, si otú ahụ na-eme ka ikike iwepụ electrostatic PM dịkwuo elu (Ọnyocha S10, ozi na-akwado).
A mụrụ mwepu PM nke ChM na ChN (Foto 3c). Ejiri CsW kpuchie M2.0 na N2.5 iji mepụta ChM2.0 na ChN2.5, n'otu n'otu. Mwepụ arụmọrụ nke ChM2.0 maka PM1.0, PM2.5 na PM10 bụ 70.1%, 78.8% na 86.3%, n'otu n'otu, ebe ụkpụrụ ChN2.5 yiri ya bụ 77.0%, 87.7% na 94.6% n'otu n'otu. Ihe mkpuchi CsW na-eme ka mwepụ nke M2.0 na N2.5 dịkwuo mma, na mmetụta a na-ahụ maka obere obere PM dị ịrịba ama. Karịsịa, chitosan nanowhiskers mụbara arụmọrụ mwepụ nke M2.0's PM0.5 na PM1.0 site na 15% na 13%, n'otu n'otu (ọgụgụ S11, ozi na-akwado). Ọ bụ ezie na M2.0 siri ike iwepụ PM1.0 nke nta n'ihi oghere fibril ya dị obosara (Njirimara 2c), ChM2.0 adsorbs PM1.0 n'ihi na cations na amides na CsW na-agafe ion-ion, na-ejikọta Pole-ion mmekọrịta. , na mmekọrịta dipole-dipole na uzuzu. N'ihi mkpuchi CsW ya, ọrụ mwepụ PM ​​nke ChM2.0 na ChN2.5 dị elu dị ka nke M5.2 na N4.8 (Table S3, ozi na-akwado).
N'ụzọ na-akpali mmasị, n'agbanyeghị na arụ ọrụ mwepụ PM ​​na-akawanye mma, mkpuchi CsW adịghị emetụta nkwụsị nrụgide. Mbelata nrụgide nke ChM2.0 na ChN2.5 mụbara ntakịrị na 15 na 23 Pa, ihe fọrọ nke nta ka ọ bụrụ ọkara mmụba a hụrụ maka M5.2 na N4.8 (Figure 3d; Table S3, ozi na-akwado). Ya mere, mkpuchi na ihe ndị dabeere na bio bụ usoro kwesịrị ekwesị iji gboo mkpa arụmọrụ nke nzacha abụọ bụ isi; ya bụ, PM mwepụ arụmọrụ na ikuku dị iche iche nke ikuku, nke na-ejikọta ọnụ. Agbanyeghị, nrụpụta PM1.0 na PM2.5 nke ChM2.0 na ChN2.5 dị ala karịa 90%; n'ụzọ doro anya, a kwesịrị imeziwanye arụmọrụ a.
Usoro nzacha agbakwunyere nke nwere ọtụtụ membranes nke ejiri nwayọọ nwayọọ na-agbanwe dayameta eriri na nha pore nwere ike dozie nsogbu ndị dị n'elu [12]. Ihe nzacha ikuku agbakwunyere nwere uru nke nanofibers abụọ dị iche iche na ụgbụ fiber superfine. N'akụkụ a, ChM na ChN na-anakọta naanị iji mepụta nzacha agbakwunyere (Int-MNs). Dịka ọmụmaatụ, a na-akwado Int-MN4.5 site na iji ChM2.0 na ChN2.5, a na-atụnyere arụmọrụ ya na ChN4.8 na ChM5.2 nke nwere njupụta mpaghara yiri ya (ya bụ ọkpụrụkpụ). N'ime nnwale nrụpụta ọrụ PM, ekpughere akụkụ ultrafine fiber nke Int-MN4.5 n'ime ụlọ uzuzu uzuzu n'ihi na akụkụ ultrafine fiber na-eguzogide ọgwụ karịa n'akụkụ nanofiber. Dị ka e gosiri na Figure 4a, Int-MN4.5 na-egosi mma mwepụ PM ​​dị mma na nrụgide dị iche iche karịa ihe nzacha abụọ nke otu akụkụ, na nkwụsị nrụgide nke 37 Pa, nke yiri ChM5.2 na nke dị ala karịa ChM5.2 ChN4. 8. Tụkwasị na nke ahụ, nrụpụta PM1.0 nke Int-MN4.5 bụ 91% (Figure 4b). N'aka nke ọzọ, ChM5.2 egosighi oke nrụpụta PM1.0 dị elu n'ihi na pores ya dị ukwuu karịa nke Int-MN4.5.


Oge nzipu: Nov-03-2021